"V. N." wrote:

I found a place selling big plastic drums (55 gal?) for $10 each.

They MUST supply the MSDS for them.

But my
question is related to the fact that they are barrels that used to have
"Emulsified Soil Sealant" in them. Now they are pretty much empty with a
little liquid at the bottom, and the sticker on top says that it's
non-toxic, and totally safe. But is it safe to rinse out the rest of the
barrel (after cutting the top off), and using it for a rain-barrel for
watering plants?

Sure - rinse and dump a few times and whatever is in there is
diluted by thousands.


Tsu

--
To doubt everything or to believe everything
are two equally convenient solutions; both
dispense with the necessity of reflection.
- Jules Henri Poincaré